Hogan, M. S., Wiggers, C., & Wiggers, L. (1998). The ultimate geography and time line guide. United States of America: GeoCreations.
Chicago Stili AlıntıHogan, Maggie S., Cindy Wiggers, and Liberty Wiggers. The Ultimate Geography and Time Line Guide. United States of America: GeoCreations, 1998.
MLA AlıntıHogan, Maggie S., Cindy Wiggers, and Liberty Wiggers. The Ultimate Geography and Time Line Guide. United States of America: GeoCreations, 1998.
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